NOISSUE use LoggedProcess to work around issues with QProcess on macOS

api/logic/BaseInstance.h

@@ -27,7 +27,7 @@
 #include "settings/INIFile.h"
 #include "BaseVersionList.h"
 #include "minecraft/auth/MojangAccount.h"
-#include "launch/MessageLevel.h"
+#include "MessageLevel.h"
 #include "pathmatcher/IPathMatcher.h"
 
 #include "multimc_logic_export.h"

api/logic/CMakeLists.txt

@@ -16,6 +16,10 @@ set(CORE_SOURCES
 	InstanceImportTask.cpp
 	InstanceList.h
 	InstanceList.cpp
+	LoggedProcess.h
+	LoggedProcess.cpp
+	MessageLevel.cpp
+	MessageLevel.h
 	BaseInstanceProvider.h
 	FolderInstanceProvider.h
 	FolderInstanceProvider.cpp
@@ -126,12 +130,8 @@ set(LAUNCH_SOURCES
 	launch/LaunchStep.h
 	launch/LaunchTask.cpp
 	launch/LaunchTask.h
-	launch/LoggedProcess.cpp
-	launch/LoggedProcess.h
 	launch/LogModel.cpp
 	launch/LogModel.h
-	launch/MessageLevel.cpp
-	launch/MessageLevel.h
 )
 
 # Old update system

api/logic/LoggedProcess.h

@@ -17,12 +17,13 @@
 
 #include <QProcess>
 #include "MessageLevel.h"
+#include "multimc_logic_export.h"
 
 /*
  * This is a basic process.
  * It has line-based logging support and hides some of the nasty bits.
  */
-class LoggedProcess : public QProcess
+class MULTIMC_LOGIC_EXPORT LoggedProcess : public QProcess
 {
 Q_OBJECT
 public:

api/logic/java/launch/CheckJava.h

@@ -16,7 +16,7 @@
 #pragma once
 
 #include <launch/LaunchStep.h>
-#include <launch/LoggedProcess.h>
+#include <LoggedProcess.h>
 #include <java/JavaChecker.h>
 
 class CheckJava: public LaunchStep

api/logic/launch/steps/PostLaunchCommand.h

@@ -16,7 +16,7 @@
 #pragma once
 
 #include <launch/LaunchStep.h>
-#include <launch/LoggedProcess.h>
+#include <LoggedProcess.h>
 
 class PostLaunchCommand: public LaunchStep
 {

api/logic/launch/steps/PreLaunchCommand.h

@@ -15,8 +15,8 @@
 
 #pragma once
 
-#include <launch/LaunchStep.h>
-#include <launch/LoggedProcess.h>
+#include "launch/LaunchStep.h"
+#include "LoggedProcess.h"
 
 class PreLaunchCommand: public LaunchStep
 {

api/logic/launch/steps/TextPrint.h

@@ -16,7 +16,7 @@
 #pragma once
 
 #include <launch/LaunchStep.h>
-#include <launch/LoggedProcess.h>
+#include <LoggedProcess.h>
 #include <java/JavaChecker.h>
 
 #include "multimc_logic_export.h"

api/logic/launch/steps/Update.h

@@ -17,7 +17,7 @@
 
 #include <launch/LaunchStep.h>
 #include <QObjectPtr.h>
-#include <launch/LoggedProcess.h>
+#include <LoggedProcess.h>
 #include <java/JavaChecker.h>
 
 // FIXME: stupid. should be defined by the instance type? or even completely abstracted away...

api/logic/minecraft/launch/CreateServerResourcePacksFolder.h

@@ -16,7 +16,7 @@
 #pragma once
 
 #include <launch/LaunchStep.h>
-#include <launch/LoggedProcess.h>
+#include <LoggedProcess.h>
 #include <minecraft/auth/AuthSession.h>
 
 // HACK: this is a workaround for MCL-3732 - 'server-resource-packs' folder is created.

api/logic/minecraft/launch/DirectJavaLaunch.h

@@ -16,7 +16,7 @@
 #pragma once
 
 #include <launch/LaunchStep.h>
-#include <launch/LoggedProcess.h>
+#include <LoggedProcess.h>
 #include <minecraft/auth/AuthSession.h>
 
 class DirectJavaLaunch: public LaunchStep

api/logic/minecraft/launch/LauncherPartLaunch.h

@@ -16,7 +16,7 @@
 #pragma once
 
 #include <launch/LaunchStep.h>
-#include <launch/LoggedProcess.h>
+#include <LoggedProcess.h>
 #include <minecraft/auth/AuthSession.h>
 
 class LauncherPartLaunch: public LaunchStep

application/ColorCache.h

@@ -1,7 +1,7 @@
 #pragma once
 #include <QtGui/QColor>
 #include <rainbow.h>
-#include <launch/MessageLevel.h>
+#include <MessageLevel.h>
 #include <QMap>
 
 class ColorCache

application/pages/WorldListPage.cpp

@@ -29,6 +29,7 @@
 #include "MultiMC.h"
 #include <GuiUtil.h>
 #include <QProcess>
+#include <FileSystem.h>
 
 WorldListPage::WorldListPage(BaseInstance *inst, std::shared_ptr<WorldList> worlds, QString id,
 							 QString iconName, QString displayName, QString helpPage,
@@ -149,7 +150,11 @@ void WorldListPage::on_copySeedBtn_clicked()
 
 void WorldListPage::on_mcEditBtn_clicked()
 {
+	if(m_mceditStarting)
+		return;
+
 	auto mcedit = MMC->mcedit();
+
 	const QString mceditPath = mcedit->path();
 
 	QModelIndex index = getSelectedWorld();
@@ -167,15 +172,11 @@ void WorldListPage::on_mcEditBtn_clicked()
 	auto program = mcedit->getProgramPath();
 	if(program.size())
 	{
-		qint64 pid;
-		if(!QProcess::startDetached(program, QStringList() << fullPath, mceditPath, &pid))
-		{
-			QMessageBox::warning(
-				this->parentWidget(),
-				tr("MCEdit failed to start!"),
-				tr("MCEdit failed to start.\nIt may be necessary to reinstall it.")
-			);
-		}
+		m_mceditProcess.reset(new LoggedProcess());
+		m_mceditProcess->setDetachable(true);
+		connect(m_mceditProcess.get(), &LoggedProcess::stateChanged, this, &WorldListPage::mceditState);
+		m_mceditProcess->start(program, {fullPath});
+		m_mceditStarting = true;
 	}
 	else
 	{
@@ -187,6 +188,37 @@ void WorldListPage::on_mcEditBtn_clicked()
 	}
 }
 
+void WorldListPage::mceditState(LoggedProcess::State state)
+{
+	bool failed = false;
+	switch(state)
+	{
+		case LoggedProcess::NotRunning:
+		case LoggedProcess::Starting:
+			return;
+		case LoggedProcess::FailedToStart:
+		case LoggedProcess::Crashed:
+		case LoggedProcess::Aborted:
+		{
+			failed = true;
+		}
+		case LoggedProcess::Running:
+		case LoggedProcess::Finished:
+		{
+			m_mceditStarting = false;
+			break;
+		}
+	}
+	if(failed)
+	{
+		QMessageBox::warning(
+			this->parentWidget(),
+			tr("MCEdit failed to start!"),
+			tr("MCEdit failed to start.\nIt may be necessary to reinstall it.")
+		);
+	}
+}
+
 void WorldListPage::worldChanged(const QModelIndex &current, const QModelIndex &previous)
 {
 	QModelIndex index = getSelectedWorld();

application/pages/WorldListPage.h

@@ -20,6 +20,7 @@
 #include "minecraft/onesix/OneSixInstance.h"
 #include "BasePage.h"
 #include <MultiMC.h>
+#include <LoggedProcess.h>
 
 class WorldList;
 namespace Ui
@@ -73,6 +74,8 @@ private:
 private:
 	Ui::WorldListPage *ui;
 	std::shared_ptr<WorldList> m_worlds;
+	unique_qobject_ptr<LoggedProcess> m_mceditProcess;
+	bool m_mceditStarting = false;
 	QString m_iconName;
 	QString m_id;
 	QString m_displayName;
@@ -88,4 +91,5 @@ private slots:
 	void on_refreshBtn_clicked();
 	void on_viewFolderBtn_clicked();
 	void worldChanged(const QModelIndex &current, const QModelIndex &previous);
+	void mceditState(LoggedProcess::State state);
 };